CN104725038A - Composite powder composition for ceramic coating and ceramic coating, and preparation method thereof - Google Patents
Composite powder composition for ceramic coating and ceramic coating, and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a composite powder composition for a ceramic coating and a ceramic coating, and a preparation method thereof. The composite powder composition comprises an yttria stable zirconia powder and graphene nanosheets. The ceramic coating, which is obtained by spraying the composite powder composition on a metal substrate, has obviously higher wear resistance than the pure-phase yttria stable zirconia coating, can obviously reduce abrasive dust generated by friction under high-load conditions, and obviously lowers the friction factor and average abrasion rate. The invention provides a feasible solution for enhancing wear resistance of the ceramic coating. Besides, the method has the advantages of high efficiency, favorable repeatability and the like, and is simple to operate and suitable for large-scale production.
Description
Technical field
The invention belongs to wear-resistant coating technical field, particularly relate to a kind of composite granule composition and ceramic coating and preparation method thereof for ceramic coating.
Background technology
As everyone knows, except minority precious metal, metallic substance can be corroded with surrounding medium generation chemical reaction and electrochemical reaction.In addition, the wearing and tearing that metallic surface causes by various mechanical effect are also very serious, and a large amount of hardwares lost efficacy because of corrosion and wearing and tearing, cause waste greatly and loss.Therefore, development protecting metallic surface and intensifying technology are the key subjects of each experts and scholars' general concern.Using plasma spraying coating process is prepare a kind of important method of ceramic-metal composite in metallic surface coated ceramic coating; the stability of the excellent mechanical properties such as comprehensive utilization metal toughness is high, antifatigue and stupalith; can be applicable to the numerous areas such as wear-resisting, high temperature resistant, corrosion-resistant, and have simple to operate, efficiency is high, favorable repeatability, be applicable to the advantage such as large-scale production.
Zirconium white (YSZ) pottery of stabilized with yttrium oxide has special four directions and to be situated between steady structure, good chemical stability and higher mechanical strength, is commonly used for high-abrasive material, is also used as the frictional interface material of bone implant (as joint prosthesis).But belong to mechanical bond between the flat particle of YSZ ceramic coating prepared by plasma spray process, bonding strength is lower; The defects such as the hole in ceramic coating are easily assembled at intersection, and cohesive strength is lower.Under pulsating stress effect, crackle easily in interlayer germinating and the expansion of weakness, affects its polishing machine.Have before people by carbon nanotube (CNT) for ceramic coating wear-resisting field modification report, but CNT is as one dimension carbon material, though have excellent mechanics, calorifics and electric property, but the lubrication of itself is poorer than the Graphene of two dimension, improve in ceramic wear-resisting performance not ideal enough, there is bibliographical information interpolation carbon nanotube may make the frictional coefficient of increase system, and from application point, the cost intensive of CNT.
Graphene nanometer sheet (GNs) is a kind of material of two-dimensional surface Rotating fields, there is good mechanical property (as high elastic coefficient, high rigidity and high tenacity) and lubricity, great specific surface area and height melt boiling point, also have good biocompatibility when low dosage uses.Current Graphene is mainly studied for improving ceramic block, alloy, the mechanical property (toughness, wear resistance etc.) of superpolymer, electric property and thermal property etc.
Summary of the invention
The present invention is directed to pure phase ceramic coating wear resisting property in prior art and do not reach more and more higher service requirements, carbon nanotube (CNT) is in ceramic composite coating simultaneously, frictional behaviour not ideal enough (main manifestations be frictional coefficient rise) and the technical problem of cost intensive, one of object is to provide a kind of composite granule composition for ceramic coating, described composition not only comprises the Zirconium powder of stabilized with yttrium oxide, but also comprises graphene nanometer sheet (GNs).
GNs is dispersed between the particle of Zirconium powder as nanometer strengthener, effectively can suppress germinating and the expansion of crackle, reduce coming off of flat particle in ceramic coating, as typical two-dimensional layer carbon material, there is good lubricity simultaneously, be expected to the wear resistance improving zirconia ceramics coating.Composite granule composition for ceramic coating of the present invention, except can be used as industrial high-abrasive material, also has the great potential being applied to biological wear-resisting interface.
In the present invention, graphene nanometer sheet: Zirconium powder is 0.5 ~ 5wt%:95 ~ 99.5wt%, is preferably 0.8 ~ 3wt%:97 ~ 99.2wt%, more preferably 1 ~ 1.5wt%:98.5 ~ 99wt%.
The graphene nanometer sheet that described graphene nanometer sheet (GNs) is thickness 5 ~ 20nm, face interior diameter is less than 100nm; Described Zirconium powder is the Zirconium powder (YSZ) of stabilized with yttrium oxide, wherein the ZrO of every 1mol
2the Y of 3.2mol% is preferably used with 3 ~ 3.5mol%
2o
3stable; The particle diameter of described composite granule composition is 15 ~ 100 μm.
Two of object of the present invention is to provide a kind of method preparing the composite granule composition for ceramic coating of the present invention, described method can be mechanical attrition method, also can be spray pyrolysis, it can also be sol-gel method, be preferably mechanical attrition method, the good composite granule composition of mobility can be prepared, wherein, mechanical attrition method is: by graphene nanometer sheet, Zirconium powder mixes with zirconium oxide abrasive ball, put into the grinding pot of tetrafluoroethylene, ball milling is carried out in planetary ball mill, sieve and dry the composite granule composition obtained for ceramic coating, wherein composite granule composition: the mass ratio of zirconium oxide abrasive ball is 1:1 ~ 3, be preferably 1:1.8 ~ 2.2, be more preferably 1:2.
Wherein, zirconium oxide abrasive ball is the ZrO of every 1mol
2ball 3mol%Y
2o
3stable.
Wherein, the rotating speed of planetary ball mill is 300 ~ 500r/min, and the planetary ball mill time is 60 ~ 300min, then crosses 40 mesh sieves and dries at 100 ~ 120 DEG C.
Three of object of the present invention is to provide a kind of ceramic coating, it is characterized in that, this ceramic coating is the ceramic coating that composition of the present invention sprays through plasma spray process.
Four of object of the present invention is to provide a kind of method preparing ceramic coating of the present invention, and the method is, composition of the present invention is sprayed to surface treated metallic substrate surface and obtains by using plasma spraying coating process.Using plasma spraying coating process of the present invention can make the composite granule composition containing graphene nanometer sheet pass flame with high speed, guarantees that the destructiveness of graphene nanometer sheet is reduced to minimum level while melting by composition.
Wherein, the parameter of described plasma spray process is as follows: plasma gas Ar flow is 30 ~ 45slpm, plasma gas H
2flow is 6 ~ 15slpm, and composite granule composition carrier gas Ar flow is 2 ~ 4slpm, and spray distance is 100 ~ 120mm, and spray power is 35 ~ 55kW, and powder feeding rate is 10 ~ 30gmin
-1.Wherein, unit slpm is standard liter/min.
Wherein, described metal base is stainless steel, pure titanium or titanium alloy base material, and described titanium alloy is preferably Ti-6Al-4V alloy; Described surface treatment is: first with sandblasting or sand papering, then ultrasonic cleaning 1 ~ 2 time in ethanol solution, and each 3 ~ 5min, finally at 80 ~ 120 DEG C of drying 1 ~ 2h; The pressure of described sandblasting is preferably 0.1 ~ 0.5MPa.
Positive progressive effect of the present invention is: spray to by composite granule composition of the present invention the ceramic coating that metal base obtains, there is the wear resistance being obviously better than pure phase zirconia coating, especially obviously can reduce because of fricative abrasive dust under high-load condition, significantly reduce average wear rate; And graphene nanometer sheet add the frictional coefficient reducing ceramic coating, especially under high load condition, this trend is more obvious.The present invention provides a kind of effective solution for improving the wear resistance of ceramic coating; Further, method of the present invention have simple to operate, efficiency is high, favorable repeatability, be applicable to the advantage such as large-scale production.Composite granule composition containing graphene nanometer sheet of the present invention is used for ceramic coating, can improve fragility and the wear resistance of zirconia ceramics coating, except can be applicable to industrial wear-resisting interface, also have the great potential being applied to biological wear-resisting interface.Method of the present invention have simple to operate, efficiency is high, favorable repeatability, be applicable to the advantage such as large-scale production.
Experiment proves, in the present invention containing Graphene and zirconic composite granule composition through atmospheric plasma spraying technique, its laminated structure of the complete maintenance of most of graphene sheet layer.Determination of carbon content shows, and in the GZ1 ceramic coating addition 1wt% of Graphene (in the composite granule composition), C content is 0.64wt%, and existence as shown in Figure 2.The friction and wear behavior of ceramic coating (ceramic coating is prepared according to embodiment 1 and tested) is tested respectively under the load that 10N, 50N, 100N tri-kinds is different, relative to GZ0 ceramic coating (pure phase YSZ), GZ1 ceramic coating average wear rate reduces 45% respectively, 57.5%, shown in 34.2%(Fig. 4), there is good wear resistance.
Accompanying drawing explanation
Fig. 1 is the XRD figure spectrum of composite granule composition of the present invention and ceramic coating (GZ1), and wherein, a is the XRD figure spectrum of composite granule composition of the present invention, and b is the XRD figure spectrum of ceramic coating of the present invention (GZ1).
Fig. 2 is the Raman collection of illustrative plates of ceramic coating of the present invention (GZ1) and zirconia ceramics coating (GZ0) of the prior art, and wherein, a is the Raman collection of illustrative plates of zirconia ceramics coating (GZ0) of the prior art; B is the Raman collection of illustrative plates of ceramic coating of the present invention (GZ1).
Fig. 3 is the stereoscan photograph of ceramic coating of the present invention (GZ1), and wherein, a is ceramic coating of the present invention (GZ1) surface picture, and b is ceramic coating of the present invention (GZ1) cross-section photographs.
Fig. 4 is ceramic coating of the present invention (GZ1) and the stable state frictional coefficient comparison diagram of zirconia ceramics coating (GZ0) of the prior art under three kinds of load 10N, 50N, 100N.
Fig. 5 is ceramic coating of the present invention (GZ1) and the average wear rate comparison diagram of zirconia ceramics coating (GZ0) of the prior art under three kinds of load 10N, 50N, 100N.
Embodiment
Embodiment 1
A, prepare composite granule composition with mechanical attrition method
By graphene nanometer sheet (GNs), yttria-stabilized zirconia powder (ZrO
2: Y
2o
3mol ratio be 1:3.2%), zirconium oxide abrasive ball (ZrO
2: Y
2o
3mol ratio be 1:3%) mix according to the mass ratio of 1:99:200, put into the grinding pot of tetrafluoroethylene, ball milling is carried out in planetary ball mill, rotational speed of ball-mill is 400r/min, Ball-milling Time is 300min, cross 40 mesh sieves afterwards, dry to obtain composite granule composition at 110 DEG C, XRD figure spectrum as shown in fig. ia.
B, using plasma spraying coating process prepare ceramic coating
Titanium alloy (Ti-6Al-4V) surface through sandblasting (pressure 0.3MPa) process, then ultrasonic cleaning 2 times in ethanol solution, each 4min, then 110 DEG C of dryings 1.5 hours, for subsequent use.
Using plasma spraying coating process, sprays to the titanium alloy surface after process by composite granule composition and obtains ceramic coating GZ1, and wherein, plasma spray process parameter is as follows: plasma gas Ar flow is 40slpm, plasma gas H
2flow is 10slpm, and composite granule composition carrier gas Ar flow is 3.5slpm, and spray distance is 120mm, and spray power is 42kW, and powder feeding rate is 20gmin
-1.As shown in fig. ib, Raman collection of illustrative plates is as shown in the b in Fig. 2 for the XRD figure spectrum of ceramic coating.
Comparative example 1
Method and condition with embodiment 1, and then obtain ceramic coating GZ0, and difference is that powder is only yttria-stabilized zirconia powder, not containing graphene nanometer sheet.
As seen from Figure 1, ceramic coating does not significantly change compared with the phase composite of composite granule composition, zirconium white is all main to be existed with the form of the steady Tetragonal that is situated between, but the steady content of tetragonal phase of ceramic coating intermediary after plasma spray process is higher than composite granule composition.This is due in quick process of cooling, and then monoclinic phase composition a small amount of in composite granule composition first cools fast through high-temperature fusion and remain the steady Tetragonal that is situated between.
As seen from Figure 2, in GZ1 ceramic coating, there is D, G and 2D characteristic peak of Graphene, and there is not Graphene characteristic peak in the GZ0 ceramic coating of contrast.
As seen from Figure 3, ceramic coating of the present invention (GZ1) surface ratio is more coarse; Can be observed graphene sheet layer from the cross-section morphology of ceramic coating to be dispersed in the column crystal gap of ceramic coating.
The frictional wear experiment of ceramic coating under the effect of effect example 1 different loads
The ceramic coating (GZ0) obtained ceramic coating (GZ1) and the comparative example 1 of embodiment 1 respectively carries out surperficial fine grinding as sample and (adopts Al
2o
3fine grinding cream, particle diameter 10 μm, speed υ=1m/s, pressure F=40N ~ 60N, time t=0.5h) and surface finish (diamond is milled cream, particle diameter 1 μm, speed υ=1.5m/s, pressure F=40 ~ 60N, time t=1 ~ 2h) process, make ceramic coating surface roughness (Ra) be down to less than 0.5 μm.
(1) GZ1 ceramic coating and GZ0 ceramic coating are arranged on UMT-3 friction wear testing machine respectively (purchased from CETR, the U.S.) on, select ball dish pattern, it is as follows that friction parameter is set: vertical load 1Kg(and F=10N), namely abrading-ball departure distance 15mm(is slided radius r), disk rotational speed 100r/min(w=100), wearing-in period 60min(t=60min).The relation of record the friction coefficient distance, calculates stable state frictional coefficient.After test terminates, use scanning electron microscopic observation grinding defect morphology and use T-8000C roughness tester (Wave, Germany) (the polishing scratch sectional area of each ceramic coating sample test 10 different positionss calculates the average wear rate (10 of ceramic coating according to formula (I) for the wear area of test polishing scratch
-6mm
3/ Nm, i.e. unit distance unit load lower volume loss).
Wherein, S
averepresent average abrasion area, l represents polishing scratch girth, L representative wearing and tearing distance.
As shown in Figure 4, under load 10N effect, GZ0 ceramic coating stable state frictional coefficient is 0.23 to stable state frictional coefficient result, and GZ1 ceramic coating is 0.27, and this is mainly because the less graphene nanometer sheet of load not yet plays caused by lubrication.As shown in Figure 5, under load 10N effect, GZ0 ceramic coating average wear rate is 4.69 × 10 to average wear rate result
-6mm
3/ Nm, and GZ1 ceramic coating is only 2.57 × 10
-6mm
3/ Nm, be starkly lower than the former, reduction rate 45.0%.
(2) vertical load is set to 5Kg (50N), carry out friction and wear test to GZ1 ceramic coating and GZ0 ceramic coating, other friction parameters are constant, and process is with (1).
As shown in Figure 4, under load 50N effect, GZ0 ceramic coating stable state frictional coefficient is 0.23 to stable state frictional coefficient result, and GZ1 ceramic coating is 0.20.As shown in Figure 5, under load 50N effect, GZ0 ceramic coating average wear rate is 2.75 × 10 to average wear rate result
-6mm
3/ (Nm), GZ1 ceramic coating is then 1.17 × 10
-6mm
3/ (Nm), is starkly lower than the former, reduces 57.5%.
(3) vertical load is set to 10Kg (100N), carry out friction and wear test to GZ1 ceramic coating and GZ0 ceramic coating, other friction parameters are constant, and process is with (1).
As shown in Figure 4, under load 100N effect, GZ0 ceramic coating stable state frictional coefficient is 0.22 to stable state frictional coefficient result, and GZ1 ceramic coating is 0.19.As shown in Figure 5, under load 100N effect, GZ0 ceramic coating average wear rate is 2.28 × 10 to average wear rate result
-6mm
3/ (Nm), GZ1 ceramic coating then only has 1.49 × 10
-6mm
3/ (Nm), is starkly lower than the former, reduces 34.2%.
By more known, at 10N, 50N, under 100N tri-kinds of different loads, the average wear rate of GZ1 ceramic coating is all less than GZ0 ceramic coating, after load reaches certain numerical value after (the present embodiment is 50N), the frictional coefficient of GZ1 coating obviously reduces compared to GZ0 coating, this phenomenon is not available for carbon nano-tube reinforced ceramic coating, in general, its wear resistance is better than GZ0 ceramic coating, illustrate that the graphene nanometer sheet of 1wt% is doped to the wear resisting property that ceramic coating that the composite granule composition that obtains in zirconium white makes improves zirconia-based ceramics coating.
Embodiment 2
A, prepare composite granule composition with mechanical attrition method
By graphene nanometer sheet (GNs), yttria-stabilized zirconia powder (ZrO
2: Y
2o
3mol ratio be 1:3.2%), zirconium oxide abrasive ball (ZrO
2: Y
2o
3mol ratio be 1:3%) mix according to the mass ratio of 0.5:99.5:100, put into the grinding pot of tetrafluoroethylene, in planetary ball mill, carry out ball milling, rotational speed of ball-mill is 500r/min, Ball-milling Time is 60min, crosses 40 mesh sieves afterwards, dries 1h and obtain composite granule composition at 100 DEG C.
B, using plasma spraying coating process prepare ceramic coating
Stainless steel (316L) surface through sandblasting (pressure 0.5MPa) process, then ultrasonic cleaning 2 times in ethanol solution, each 4min, then 110 DEG C of dryings 1.5 hours, for subsequent use.
Using plasma spraying coating process, sprays to the titanium alloy surface after process by composite granule composition and obtains ceramic coating GZ0.5, and wherein, plasma spray process parameter is as follows: plasma gas Ar flow is 35slpm, plasma gas H
2flow is 12slpm, and composite granule composition carrier gas Ar flow is 3slpm, and spray distance is 110mm, and spray power is 39.6kW, and powder feeding rate is 22gmin
-1.
Comparative example 2
Method and condition with embodiment 2, and then obtain ceramic coating (code name GZ0), and difference is that powder is only yttria-stabilized zirconia powder, not containing graphene nanometer sheet.
After tested, embodiment 2 gained ceramic coating pattern and phase composite and embodiment 1 similar.
The frictional wear experiment of ceramic coating under the effect of effect example 2 different loads
Respectively as sample, surperficial fine grinding and surface finish (with embodiment 1) process are carried out to the ceramic coating (GZ0) that ceramic coating (GZ0.5) and the comparative example 2 of embodiment 2 obtain, make ceramic coating surface roughness (Ra) be down to less than 0.5 μm.
(1) tribology tester is in the same manner as in Example 1, use UMT-3 friction wear testing machine (CETR, USA) respectively GZ0.5 ceramic coating and GZ0 ceramic coating are tested, the relation of record the friction coefficient distance, and calculate stable state frictional coefficient, after wearing and tearing terminate, use scanning electron microscopic observation grinding defect morphology and use T-8000C roughness tester (Wave, Germany) test polishing scratch wear area, calculate average wear rate.
Result is as shown in table 1, and under load 10N effect, the stable state frictional coefficient of GZ0 ceramic coating is 0.25, and average wear rate is 5.31 × 10
-6mm
3/ Nm, and the frictional coefficient of GZ0.5 ceramic coating is 0.25, average wear rate is only 5.07 × 10
-6mm
3/ Nm, wear rate change is not obvious.
(2) vertical load is set to 5Kg (50N), carry out friction and wear test to GZ0.5 ceramic coating and GZ0 ceramic coating, other friction parameters are constant, and process is with (1).
Result is as shown in table 1, and under load 50N effect, the stable state frictional coefficient of GZ0 ceramic coating is 0.25, and average wear rate is 3.01 × 10
-6mm
3/ (Nm), and the stable state frictional coefficient of GZ0.5 ceramic coating is 0.22, average wear rate is then 2.89 × 10
-6mm
3/ (Nm), wear rate change is not obvious
(3) vertical load is set to 10Kg (100N), carry out friction and wear test to GZ0.5 ceramic coating and GZ0 ceramic coating, other friction parameters are constant, and process is with (1).
Result is as shown in table 1, and under load 100N effect, the stable state frictional coefficient of GZ0 ceramic coating is 0.24, and average wear rate is 2.56 × 10
-6mm
3/ (Nm), and the stable state frictional coefficient of GZ0.5 ceramic coating is 0.21, average wear rate then only has 2.17 × 10
-6mm
3/ (Nm), a little less than the former, reduces 15.2%.
By more known, under 10N, 50N, 100N tri-kinds of different loads, GZ0.5 ceramic coating average wear rate is all lower than GZ0 ceramic coating, the frictional coefficient of GZ0.5 coating obviously reduces compared to GZ0 coating, this phenomenon is not available for carbon nano-tube reinforced ceramic coating, wear resistance is all better than GZ0 ceramic coating, illustrates that 0.5wt% graphene nanometer sheet is doped to the wear resisting property that ceramic coating that the composite granule composition that obtains in zirconium white makes improves zirconia-based ceramics coating.
Embodiment 3
A, prepare composite granule composition with mechanical attrition method
By graphene nanometer sheet (GNs), yttria-stabilized zirconia powder (ZrO
2: Y
2o
3mol ratio be 1:3.2%), zirconium oxide abrasive ball (ZrO
2: Y
2o
3mol ratio be 1:3%) mix according to the mass ratio of 1.5:98.5:300, put into the grinding pot of tetrafluoroethylene, in planetary ball mill, carry out ball milling, rotational speed of ball-mill is 500r/min, Ball-milling Time is 120min, crosses 40 mesh sieves afterwards, dries to obtain composite granule composition at 120 DEG C.
B, using plasma spraying coating process prepare ceramic coating
Titanium alloy (Ti-6Al-4V) surface through sandblasting (pressure 0.3MPa) process, then ultrasonic cleaning 2 times in ethanol solution, each 4min, then 100 DEG C of dryings 1 hour, for subsequent use.
Using plasma spraying coating process, sprays to the titanium alloy surface after process by composite granule composition and obtains ceramic coating GZ1.5, and wherein, plasma spray process parameter is as follows: plasma gas Ar flow is 32slpm, plasma gas H
2flow is 15slpm, and composite granule composition carrier gas Ar flow is 2slpm, and spray distance is 120mm, and spray power is 42.5kW, and powder feeding rate is 19gmin
-1.
Comparative example 3
Method and condition with embodiment 3, and then obtain ceramic coating GZ0, and difference is that powder is only yttria-stabilized zirconia powder, not containing graphene nanometer sheet.
Through surveying, embodiment 3 gained ceramic coating pattern and phase composite and embodiment 1 similar.
The frictional wear experiment of ceramic coating under the effect of effect example 3 different loads
Respectively as sample, surperficial fine grinding and surface finish (with embodiment 1) process are carried out to the ceramic coating (GZ0) that ceramic coating (GZ1.5) and the comparative example 3 of embodiment 3 obtain, make ceramic coating surface roughness (Ra) be down to less than 0.5 μm.
(1) tribology tester is in the same manner as in Example 1, use UMT-3 friction wear testing machine (CETR, USA) respectively GZ1.5 ceramic coating and GZ0 ceramic coating are tested, the relation of record the friction coefficient distance, and calculate stable state frictional coefficient, after wearing and tearing terminate, use scanning electron microscopic observation grinding defect morphology and use T-8000C roughness tester (Wave, Germany) test polishing scratch wear area, calculate average wear rate.
Result is as shown in table 1, and under load 10N effect, the stable state frictional coefficient of GZ0 ceramic coating is 0.30, and average wear rate is 4.86 × 10
-6mm
3/ Nm, and the stable state frictional coefficient of GZ1.5 ceramic coating is 0.29, but wear rate is only 2.82 × 10
-6mm
3/ Nm, is starkly lower than the former, reduces 41.9%.
(2) vertical load is set to 5Kg (50N), carry out friction and wear test to GZ1.5 ceramic coating and GZ0 ceramic coating, other friction parameters are constant, and process is with (1).
Result is as shown in table 1, and under load 50N effect, the stable state frictional coefficient of GZ0 ceramic coating is 0.29, and average wear rate is 2.89 × 10
-6mm
3/ (Nm), and the stable state frictional coefficient of GZ1.5 ceramic coating is 0.23, average wear rate is then 2.33 × 10
-6mm
3/ (Nm), is starkly lower than the former, reduces 19.37%.
(3) vertical load is set to 10Kg (100N), carry out friction and wear test to GZ1.5 ceramic coating and GZ0 ceramic coating, other friction parameters are constant, and process is with (1).
Result is as shown in table 1, and under load 100N effect, the stable state frictional coefficient of GZ0 ceramic coating is 0.29, and average wear rate is 2.86 × 10
-6mm
3/ (Nm), and the stable state frictional coefficient of GZ1.5 ceramic coating is 0.20, average wear rate then only has 2.01 × 10
-6mm
3/ (Nm), is starkly lower than the former, reduces 29.7%.
By more known, under 10N, 50N, 100N tri-kinds of different loads, the average wear rate of GZ1.5 ceramic coating is all less than GZ0 ceramic coating, and the frictional coefficient of GZ1.5 coating obviously reduces compared to GZ0 coating, this phenomenon is not available for carbon nano-tube reinforced ceramic coating, in general, its wear resistance is better than GZ0 ceramic coating, illustrates that the graphene nanometer sheet of 1.5wt% is doped to the wear resisting property that ceramic coating that the composite granule composition that obtains in zirconium white makes improves zirconia-based ceramics coating.
The stable state frictional coefficient of the coating ceramic of table 1 the present invention and contrast and average wear rate
Claims (10)
1., for a composite granule composition for ceramic coating, described composition comprises the Zirconium powder of stabilized with yttrium oxide, it is characterized in that, also comprises graphene nanometer sheet.
2. composition as claimed in claim 1, is characterized in that, graphene nanometer sheet: Zirconium powder is 0.5 ~ 5wt%:95 ~ 99.5wt%, is preferably 0.8 ~ 3wt%:97 ~ 99.2wt%, more preferably 1 ~ 1.5wt%:98.5 ~ 99wt%.
3. composition as claimed in claim 1, is characterized in that, the graphene nanometer sheet that described graphene nanometer sheet is thickness 5 ~ 20nm, face interior diameter is less than 100nm; Described Zirconium powder is the ZrO of every 1mol
2with the Y of the preferred 3.2mol% of 3 ~ 3.5mol%
2o
3stable; The particle diameter of described composite granule composition is 15 ~ 100 μm.
4. prepare claim 1 for one kind, the method of the composite granule composition for ceramic coating described in 2 or 3, it is characterized in that, described method is mechanical attrition method, spray pyrolysis or sol-gel method, wherein, mechanical mixing is: by graphene nanometer sheet, Zirconium powder mixes with zirconium oxide abrasive ball, put into the grinding pot of tetrafluoroethylene, ball milling is carried out in planetary ball mill, sieve and dry the composite granule composition obtained for ceramic coating, wherein composite granule composition: the mass ratio of zirconium oxide abrasive ball is 1:1 ~ 3, be preferably 1:1.8 ~ 2.2, be more preferably 1:2.
5. method as claimed in claim 4, it is characterized in that, zirconium oxide abrasive ball is the ZrO of every 1mol
2ball 3mol%Y
2o
3stable.
6. method as claimed in claim 4, it is characterized in that, the rotating speed of ball milling is 300 ~ 500r/min, and Ball-milling Time is 60 ~ 300min, then crosses 40 mesh sieves and dries at 100 ~ 120 DEG C.
7. a ceramic coating, is characterized in that, the ceramic coating that this ceramic coating sprays through plasma spray process for the composition described in any one of claims 1 to 3.
8. prepare a method for ceramic coating according to claim 7, it is characterized in that, using plasma spraying coating process, the composition described in any one of claims 1 to 3 is sprayed to surface treated metallic substrate surface and obtains.
9. method as claimed in claim 8, it is characterized in that, the parameter of described plasma spray process is as follows: plasma gas Ar flow is 30 ~ 45slpm, plasma gas H
2flow is 6 ~ 15slpm, and carrier gas Ar flow is 2 ~ 4slpm, and spray distance is 100 ~ 120mm, and spray power is 35 ~ 55kW, and powder feeding rate is 10 ~ 30gmin
-1.
10. method as claimed in claim 8, it is characterized in that, described metal base is stainless steel, pure titanium or titanium alloy base material; Described surface treatment is: the sandblasting first under pressure is 0.2 ~ 0.5Mpa or sand papering, and then ultrasonic cleaning 1 ~ 2 time in ethanol solution, each 3 ~ 5min, finally at 80 ~ 120 DEG C of drying 1 ~ 2h.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106321497A (en) * | 2016-11-10 | 2017-01-11 | 无锡市明盛强力风机有限公司 | Fan rotor self-lubricating method |
| CN106581783A (en) * | 2016-12-30 | 2017-04-26 | 马爱进 | Ceramic coating scalpel |
| CN106747431A (en) * | 2017-02-24 | 2017-05-31 | 华南理工大学 | A kind of Graphene ceramic composite powder and preparation method thereof |
| CN106744829A (en) * | 2016-11-11 | 2017-05-31 | 南京信息工程大学 | A kind of method that Graphene composite nano oxide coating is embedded in material surface micro-structural |
| CN107500782A (en) * | 2017-09-19 | 2017-12-22 | 迟逞 | A kind of preparation method of increasing material manufacturing modified anti-friction wear-resistant nano-ceramic powder material against corrosion |
| CN108178149A (en) * | 2018-02-07 | 2018-06-19 | 南京信息工程大学 | A kind of preparation method of graphene nano volume |
| CN112645385A (en) * | 2020-10-28 | 2021-04-13 | 北京理工大学 | YSZ/graphene composite powder for sealing coating and preparation method thereof |
| CN112759950A (en) * | 2020-10-28 | 2021-05-07 | 北京理工大学 | YSZ/graphene composite sealing coating and preparation method thereof |
| CN115321992A (en) * | 2022-09-06 | 2022-11-11 | 哈尔滨工业大学 | GNPs/YSZ composite ceramic powder and preparation method and application thereof |
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| CN106321497A (en) * | 2016-11-10 | 2017-01-11 | 无锡市明盛强力风机有限公司 | Fan rotor self-lubricating method |
| CN106744829A (en) * | 2016-11-11 | 2017-05-31 | 南京信息工程大学 | A kind of method that Graphene composite nano oxide coating is embedded in material surface micro-structural |
| CN106581783A (en) * | 2016-12-30 | 2017-04-26 | 马爱进 | Ceramic coating scalpel |
| CN106747431A (en) * | 2017-02-24 | 2017-05-31 | 华南理工大学 | A kind of Graphene ceramic composite powder and preparation method thereof |
| CN106747431B (en) * | 2017-02-24 | 2020-09-22 | 华南理工大学 | Graphene-ceramic composite powder and preparation method thereof |
| CN107500782B (en) * | 2017-09-19 | 2020-05-05 | 迟逞 | Preparation method of modified antifriction wear-resistant corrosion-resistant nano ceramic powder material for additive manufacturing |
| CN107500782A (en) * | 2017-09-19 | 2017-12-22 | 迟逞 | A kind of preparation method of increasing material manufacturing modified anti-friction wear-resistant nano-ceramic powder material against corrosion |
| CN108178149A (en) * | 2018-02-07 | 2018-06-19 | 南京信息工程大学 | A kind of preparation method of graphene nano volume |
| CN112645385A (en) * | 2020-10-28 | 2021-04-13 | 北京理工大学 | YSZ/graphene composite powder for sealing coating and preparation method thereof |
| CN112759950A (en) * | 2020-10-28 | 2021-05-07 | 北京理工大学 | YSZ/graphene composite sealing coating and preparation method thereof |
| CN112759950B (en) * | 2020-10-28 | 2022-03-11 | 北京理工大学 | YSZ/graphene composite sealing coating and preparation method thereof |
| CN115321992A (en) * | 2022-09-06 | 2022-11-11 | 哈尔滨工业大学 | GNPs/YSZ composite ceramic powder and preparation method and application thereof |
| CN115321992B (en) * | 2022-09-06 | 2023-09-22 | 哈尔滨工业大学 | GNPs/YSZ composite ceramic powder and preparation method and application thereof |
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